Technical Data
Peptide YY (PYY, Peptide Tyrosine Tyrosine)
The intestinal peptide YY is related to the PP-family of peptides and occurs in the glicentin cells in the gut. They are numerous in the rectum, colon and ileum and few in the duodenum and jejunum. PYY has hormone-like action, inhibits gut motility and pancreatic exocrine secretion and cause vasoconstriction. PYY may occur in endorine tumors of the pancreas and of the rectum.

Suitable for use in Immunofluorescence Microscopy and Immunohistochemistry. Other applications not tested.

Recommended Dilutions:
Immunohistochemistry (Frozen, paraffin): 1:1500-1:2500 using FITC, with overnight incubation at 4C.
Optimal dilution to be determined by researcher.

Positive Control:
Frozen sections of rat intestine

Storage and Stability:
Lyophilized powder may be stored at -20C. Stable for 12 months at -20C after receipt. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20C. Reconstituted product is stable for 12 months at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
50ul-20CBlue IceGuinea pig
Not Determined
Synthetic porcine peptide YY (Pennisula)
Supplied as a lyophilized powder. Reconstitute with 50-100ul sterile ddH20. Dilute further in 0.1M PBS, 1% BSA, 0.1% sodium azide.
Recognizes Peptide YY. Absorption with 10-100ug immunogen per ml diluted antiserum abolishes the staining. Species Crossreactivity: human, rat, mouse and feline
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.
1. Portela-Gomes, G., et al., Colocalization of synaptophysin with different neuroendocrine hormones in the human gastrointestinal tract. Histochem. Cell. Biol. 109: 281-291 (1998). 2. Myrsen-Axcrona, U., et al., Developmental expression of NPY, PYY and PP in the rat pancreas and their coexistence with islet hormones. Regulatory Peptides 68: 165-175 (1997). 3. Bttcher, G., et al., Peptide YY: intrapancreatic localization and effects on insulin and glucagon secretion in the mouse. Pancreas 4: 282-288 (1989).